HTTP error code -11? apps script API using esp8266

[usersname1]

Hi, I am trying to call the apps script API using ESP8266, the esp receives a response code of -11 and an empty body. In the below code snippet i have used GET method, I tried using POST but it still doesn't work. It works when I directly put the url in the browser search box. But can't figure out whats the issue here is.

CODE:

#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <ESP8266HTTPClient.h>
WiFiClientSecure wifiClient;

String apiUrl = "https://script.google.com/macros/s/AKfycbwH6BV5f751VwJIsZ2G3P9N7MblS65USOqTez-zPu_ga-tH9AGUoEk4LhsJm9NoJfeEIA/exec";

void setup(){
  Serial.begin(115200);
  WiFi.begin("SSID", "Password");

  Serial.println("Connecting to WiFi...");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.println(".");
  }
  Serial.println("Connected to WiFi!");
  
  delay(5000);
  Serial.println("Calling API...1");
  callAPI_GET("create");
  delay(30000);
  Serial.println("Calling API...2");
  callAPI_GET("update");
  delay(30000);
  Serial.println("Calling API...3");
  callAPI_GET("read");
}

void loop(){
  delay(10000);
}

String getApiUrl(String method){
  if (method=="create"){return apiUrl + "?method=create&id=D001&name=omm"; }
  else if (method=="update"){return apiUrl + "?method=update&id=D001&data=111110000022222111110000022222"; }
  else return apiUrl + "?method=read&id=D001";
  }

void callAPI_GET(String method) {

  Serial.println(method);
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    wifiClient.setInsecure();
    int httpResponseCode;

    // Prepare JSON payload
    String url = getApiUrl(method);
    Serial.println("New url: " + url);
    
    http.begin(wifiClient, url); // Use the apiUrl variable
    // http.addHeader("Content-Type", "text/plain;charset=utf-8");
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");

    // Send POST request
    httpResponseCode = http.GET();    
    Serial.println("GET request sent.");
    
    Serial.println("Response Code = " + String(httpResponseCode));
    Serial.println("Response Body = " + http.getString());

    http.end();
  } else {
    Serial.println("WiFi not connected");
  }
}

OUTPUT:

Connected to WiFi!
Calling API...1
create
New url: https://script.google.com/macros/s/AKfycbwH6BV5f751VwJIsZ2G3P9N7MblS65USOqTez-zPu_ga-tH9AGUoEk4LhsJm9NoJfeEIA/exec?method=create&id=D001&name=omm
GET request sent.
Response Code = -11
Response Body = 

Calling API...2
update
New url: https://script.google.com/macros/s/AKfycbwH6BV5f751VwJIsZ2G3P9N7MblS65USOqTez-zPu_ga-tH9AGUoEk4LhsJm9NoJfeEIA/exec?method=update&id=D001&data=111110000022222111110000022222
GET request sent.
Response Code = -11
Response Body = 

Calling API...3
read
New url: https://script.google.com/macros/s/AKfycbwH6BV5f751VwJIsZ2G3P9N7MblS65USOqTez-zPu_ga-tH9AGUoEk4LhsJm9NoJfeEIA/exec?method=read&id=D001
GET request sent.
Response Code = -11
Response Body =